CZC AUTO Trailer Hitch Locks 5/8in Dia, 4in Long — 2-Pack Keyed Alike, Solid Steel Corrosion-Resistant

The CZC AUTO Trailer Hitch Lock is a heavy-duty 5/8" diameter, 4" long receiver pin sold as a 2-pack keyed alike to secure Class III/IV hitches and towing accessories.

If you tow trailers, carry bike racks, or leave hitch-mounted gear on your vehicle, a robust locking pin reduces theft risk and keeps connections secure on the road. This CZC AUTO set includes two identical-key locks made from solid steel with a corrosion-resistant finish and a sealed dust cap to protect the cylinder. The extra-long 4" effective length is intended for larger receivers and accessories common on trucks, SUVs, and heavy-duty trailers.

Will this hitch lock fit my receiver and accessories?

The pin measures 5/8" in diameter with a 4" effective length, which fits many Class III and IV hitch receivers and larger aftermarket hitch-mounted accessories. Always measure the inside width of your receiver and the shank length of your accessory before ordering to ensure compatibility.

• Diameter: 5/8" (standard for many heavy-duty applications)
• Length: 4" effective pin length for bigger receivers
• Designed for Class III & IV hitches, bike racks, trays, and ball mounts
• Verify receiver and accessory measurements prior to purchase

How secure is the lock against theft and the elements?

This CZC AUTO lock uses a solid steel pin with a black electrophoretic coating to resist corrosion and wear. The tubular zinc-alloy lock cylinder is upgraded for improved pick resistance, and a watertight dust cap shields the keyway from dirt and moisture to maintain reliable operation.

• Solid steel construction for strength under load
• Electrophoretic paint reduces rust and surface damage
• Upgraded zinc alloy tubular core improves anti-theft resistance
• Watertight dust cap protects the keyhole from water and debris

What comes in the package and how easy is it to use?

The package contains two hitch lock pins that are keyed alike, plus two keys per lock for convenient access. Operation is straightforward: insert the pin through the receiver and accessory, turn the key to lock, then pull on the lock head to confirm it is secured. Two identical keys mean you can operate both locks with one key, saving time when swapping accessories.

• Includes two keyed-alike lock pins (two keys per lock)
• Simple key-turn locking with a pull-to-check function
• Ideal when you use multiple hitch accessories and want one key
• Instructions and customer support included for setup

What warranty and support does CZC AUTO provide?

CZC AUTO backs this hitch lock set with a quality-focused policy that includes a 12-month warranty for manufacturing issues and a 30-day money-back option. If you encounter a problem or have fitment questions, the brand offers customer service that responds within 24 hours to resolve concerns.

• 30-day money-back guarantee for any reason
• 12-month warranty for quality-related defects
• Customer support promise: responses within 24 hours
• Replacement keys or warranty assistance available through support

Who is this for? The CZC AUTO Trailer Hitch Lock set is aimed at truck and SUV owners, professional haulers, and outdoor enthusiasts who use Class III/IV receivers and want a keyed-alike, corrosion-resistant locking solution. It’s especially useful for those who frequently swap hitch-mounted racks, ball mounts, or towing accessories and need a dependable, easy-to-use lock that fits larger receivers.